Meteorology

Question 1

Tropical Cyclone Advisory Interval

Answer 1

<= 6 hours

Question 2

Space Weather Advisories are for:

Answer 2

-HF Comm and SATCOM (propogation and absorption)
-GNSS (degredation)
-Radiation (increased exposure)

Question 3

SIGWX Intervals

Answer 3

-0000 / 0600 / 1200 / 1800
-Not later than 7 / 9 hours after the observation

Question 4

FG Criteria

Answer 4

Visibility <1000m

Question 5

SA, DU, HZ, FU, VA, BR

Answer 5

-Visibility <5000m
-FU: Smoke

Question 6

PO & FC

Answer 6

-PO: Dust/Sand whirls (dust devils)
-FC: Funnel Cloud (Tornado or watersprout)

Question 7

BL, DR, MI

Answer 7

BL: Blowing, height 2m or more
DR: Drifting, height <2m
MI: Shallow, height <2m

Question 8

VC

Answer 8

Vicinity: within 8-16km of ARP

Question 9

Cloud Base Reference

Answer 9

-Aerodrome elevation
-For precision approach only: if threshold elevation 15m or more, than threshold

Question 10

CAVOK

Answer 10

-Visibility 10km or more,
-No cloud with base below 5000ft or MSA
-No CB or TCU at any level
-No weather of significance to aviation

Question 11

ASHTAM Validity and Amendment

Answer 11

-Max 24 hours
-If alert level changed, new one must be issued

Question 12

Aerodrome Windshear Alert Threshold

Answer 12

Wind speed change >=15kt

Question 13

ASHTAM Alert Colors

Answer 13

-Green: Back to normal
-Yellow: Elevated unrest
-Orange: Increased chance of eruption or eruption in progress with little or no ash
-Red: Imminent eruption or in progress with significant ash

Question 14

GRF

Answer 14

-Global Reporting Format
-RWY Condition Assessment Matrix (RCAM) used to get RWY Condition Code (RWYCC)
-RWYCC is a part of RWY Condition Report (RCR)
-RCR is a part of SNOWTAM

Question 15

RCR

Answer 15

-Runway Condition Report
-Max validity 8 hours